Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Pixart PAC207BCA library |
| 3 | * |
| 4 | * Copyright (C) 2008 Hans de Goede <j.w.r.degoede@hhs.nl> |
| 5 | * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li |
| 6 | * Copyleft (C) 2005 Michel Xhaard mxhaard@magic.fr |
| 7 | * |
| 8 | * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #define MODULE_NAME "pac207" |
| 27 | |
| 28 | #include "gspca.h" |
| 29 | |
Jean-Francois Moine | a5ae206 | 2008-07-04 11:16:16 -0300 | [diff] [blame] | 30 | #define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 4) |
| 31 | static const char version[] = "2.1.4"; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 32 | |
| 33 | MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>"); |
| 34 | MODULE_DESCRIPTION("Pixart PAC207"); |
| 35 | MODULE_LICENSE("GPL"); |
| 36 | |
| 37 | #define PAC207_CTRL_TIMEOUT 100 /* ms */ |
| 38 | |
| 39 | #define PAC207_BRIGHTNESS_MIN 0 |
| 40 | #define PAC207_BRIGHTNESS_MAX 255 |
| 41 | #define PAC207_BRIGHTNESS_DEFAULT 4 /* power on default: 4 */ |
| 42 | |
| 43 | #define PAC207_EXPOSURE_MIN 4 |
| 44 | #define PAC207_EXPOSURE_MAX 26 |
| 45 | #define PAC207_EXPOSURE_DEFAULT 4 /* power on default: 3 ?? */ |
| 46 | #define PAC207_EXPOSURE_KNEE 11 /* 4 = 30 fps, 11 = 8, 15 = 6 */ |
| 47 | |
| 48 | #define PAC207_GAIN_MIN 0 |
| 49 | #define PAC207_GAIN_MAX 31 |
| 50 | #define PAC207_GAIN_DEFAULT 9 /* power on default: 9 */ |
| 51 | #define PAC207_GAIN_KNEE 20 |
| 52 | |
| 53 | #define PAC207_AUTOGAIN_DEADZONE 30 |
| 54 | /* We calculating the autogain at the end of the transfer of a frame, at this |
| 55 | moment a frame with the old settings is being transmitted, and a frame is |
| 56 | being captured with the old settings. So if we adjust the autogain we must |
| 57 | ignore atleast the 2 next frames for the new settings to come into effect |
| 58 | before doing any other adjustments */ |
| 59 | #define PAC207_AUTOGAIN_IGNORE_FRAMES 3 |
| 60 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 61 | /* specific webcam descriptor */ |
| 62 | struct sd { |
| 63 | struct gspca_dev gspca_dev; /* !! must be the first item */ |
| 64 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 65 | u8 mode; |
| 66 | |
| 67 | u8 brightness; |
| 68 | u8 exposure; |
| 69 | u8 autogain; |
| 70 | u8 gain; |
| 71 | |
| 72 | u8 sof_read; |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 73 | u8 header_read; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 74 | u8 autogain_ignore_frames; |
| 75 | |
| 76 | atomic_t avg_lum; |
| 77 | }; |
| 78 | |
| 79 | /* V4L2 controls supported by the driver */ |
| 80 | static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val); |
| 81 | static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val); |
| 82 | static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val); |
| 83 | static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val); |
| 84 | static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val); |
| 85 | static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val); |
| 86 | static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val); |
| 87 | static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val); |
| 88 | |
| 89 | static struct ctrl sd_ctrls[] = { |
| 90 | #define SD_BRIGHTNESS 0 |
| 91 | { |
| 92 | { |
| 93 | .id = V4L2_CID_BRIGHTNESS, |
| 94 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 95 | .name = "Brightness", |
| 96 | .minimum = PAC207_BRIGHTNESS_MIN, |
| 97 | .maximum = PAC207_BRIGHTNESS_MAX, |
| 98 | .step = 1, |
| 99 | .default_value = PAC207_BRIGHTNESS_DEFAULT, |
| 100 | .flags = 0, |
| 101 | }, |
| 102 | .set = sd_setbrightness, |
| 103 | .get = sd_getbrightness, |
| 104 | }, |
| 105 | #define SD_EXPOSURE 1 |
| 106 | { |
| 107 | { |
| 108 | .id = V4L2_CID_EXPOSURE, |
| 109 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 110 | .name = "exposure", |
| 111 | .minimum = PAC207_EXPOSURE_MIN, |
| 112 | .maximum = PAC207_EXPOSURE_MAX, |
| 113 | .step = 1, |
| 114 | .default_value = PAC207_EXPOSURE_DEFAULT, |
| 115 | .flags = 0, |
| 116 | }, |
| 117 | .set = sd_setexposure, |
| 118 | .get = sd_getexposure, |
| 119 | }, |
| 120 | #define SD_AUTOGAIN 2 |
| 121 | { |
| 122 | { |
| 123 | .id = V4L2_CID_AUTOGAIN, |
| 124 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 125 | .name = "Auto Gain", |
| 126 | .minimum = 0, |
| 127 | .maximum = 1, |
| 128 | .step = 1, |
| 129 | .default_value = 1, |
| 130 | .flags = 0, |
| 131 | }, |
| 132 | .set = sd_setautogain, |
| 133 | .get = sd_getautogain, |
| 134 | }, |
| 135 | #define SD_GAIN 3 |
| 136 | { |
| 137 | { |
| 138 | .id = V4L2_CID_GAIN, |
| 139 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 140 | .name = "gain", |
| 141 | .minimum = PAC207_GAIN_MIN, |
| 142 | .maximum = PAC207_GAIN_MAX, |
| 143 | .step = 1, |
| 144 | .default_value = PAC207_GAIN_DEFAULT, |
| 145 | .flags = 0, |
| 146 | }, |
| 147 | .set = sd_setgain, |
| 148 | .get = sd_getgain, |
| 149 | }, |
| 150 | }; |
| 151 | |
| 152 | static struct cam_mode sif_mode[] = { |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 153 | {V4L2_PIX_FMT_PAC207, 176, 144, 1}, |
| 154 | {V4L2_PIX_FMT_PAC207, 352, 288, 0}, |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 155 | }; |
| 156 | |
| 157 | static const __u8 pac207_sensor_init[][8] = { |
| 158 | {0x10, 0x12, 0x0d, 0x12, 0x0c, 0x01, 0x29, 0xf0}, |
| 159 | {0x00, 0x64, 0x64, 0x64, 0x04, 0x10, 0xf0, 0x30}, |
| 160 | {0x00, 0x00, 0x00, 0x70, 0xa0, 0xf8, 0x00, 0x00}, |
| 161 | {0x00, 0x00, 0x32, 0x00, 0x96, 0x00, 0xa2, 0x02}, |
| 162 | {0x32, 0x00, 0x96, 0x00, 0xA2, 0x02, 0xaf, 0x00}, |
| 163 | }; |
| 164 | |
| 165 | /* 48 reg_72 Rate Control end BalSize_4a =0x36 */ |
| 166 | static const __u8 PacReg72[] = { 0x00, 0x00, 0x36, 0x00 }; |
| 167 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 168 | static const unsigned char pac207_sof_marker[5] = |
| 169 | { 0xff, 0xff, 0x00, 0xff, 0x96 }; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 170 | |
| 171 | int pac207_write_regs(struct gspca_dev *gspca_dev, u16 index, |
| 172 | const u8 *buffer, u16 length) |
| 173 | { |
| 174 | struct usb_device *udev = gspca_dev->dev; |
| 175 | int err; |
| 176 | u8 kbuf[8]; |
| 177 | |
| 178 | memcpy(kbuf, buffer, length); |
| 179 | |
| 180 | err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01, |
| 181 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, |
| 182 | 0x00, index, kbuf, length, PAC207_CTRL_TIMEOUT); |
| 183 | if (err < 0) |
| 184 | PDEBUG(D_ERR, |
| 185 | "Failed to write registers to index 0x%04X, error %d)", |
| 186 | index, err); |
| 187 | |
| 188 | return err; |
| 189 | } |
| 190 | |
| 191 | |
| 192 | int pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value) |
| 193 | { |
| 194 | struct usb_device *udev = gspca_dev->dev; |
| 195 | int err; |
| 196 | |
| 197 | err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, |
| 198 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, |
| 199 | value, index, NULL, 0, PAC207_CTRL_TIMEOUT); |
| 200 | if (err) |
| 201 | PDEBUG(D_ERR, "Failed to write a register (index 0x%04X," |
| 202 | " value 0x%02X, error %d)", index, value, err); |
| 203 | |
| 204 | return err; |
| 205 | } |
| 206 | |
| 207 | |
| 208 | int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index) |
| 209 | { |
| 210 | struct usb_device *udev = gspca_dev->dev; |
| 211 | u8 buff; |
| 212 | int res; |
| 213 | |
| 214 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, |
| 215 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, |
| 216 | 0x00, index, &buff, 1, PAC207_CTRL_TIMEOUT); |
| 217 | if (res < 0) { |
| 218 | PDEBUG(D_ERR, |
| 219 | "Failed to read a register (index 0x%04X, error %d)", |
| 220 | index, res); |
| 221 | return res; |
| 222 | } |
| 223 | |
| 224 | return buff; |
| 225 | } |
| 226 | |
| 227 | |
| 228 | /* this function is called at probe time */ |
| 229 | static int sd_config(struct gspca_dev *gspca_dev, |
| 230 | const struct usb_device_id *id) |
| 231 | { |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 232 | struct sd *sd = (struct sd *) gspca_dev; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 233 | struct cam *cam; |
| 234 | u8 idreg[2]; |
| 235 | |
| 236 | idreg[0] = pac207_read_reg(gspca_dev, 0x0000); |
| 237 | idreg[1] = pac207_read_reg(gspca_dev, 0x0001); |
| 238 | idreg[0] = ((idreg[0] & 0x0F) << 4) | ((idreg[1] & 0xf0) >> 4); |
| 239 | idreg[1] = idreg[1] & 0x0f; |
| 240 | PDEBUG(D_PROBE, "Pixart Sensor ID 0x%02X Chips ID 0x%02X", |
| 241 | idreg[0], idreg[1]); |
| 242 | |
| 243 | if (idreg[0] != 0x27) { |
| 244 | PDEBUG(D_PROBE, "Error invalid sensor ID!"); |
| 245 | return -ENODEV; |
| 246 | } |
| 247 | |
| 248 | pac207_write_reg(gspca_dev, 0x41, 0x00); |
| 249 | /* Bit_0=Image Format, |
| 250 | * Bit_1=LED, |
| 251 | * Bit_2=Compression test mode enable */ |
| 252 | pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */ |
| 253 | pac207_write_reg(gspca_dev, 0x11, 0x30); /* Analog Bias */ |
| 254 | |
| 255 | PDEBUG(D_PROBE, |
| 256 | "Pixart PAC207BCA Image Processor and Control Chip detected" |
| 257 | " (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
| 258 | |
| 259 | cam = &gspca_dev->cam; |
| 260 | cam->dev_name = (char *) id->driver_info; |
| 261 | cam->epaddr = 0x05; |
| 262 | cam->cam_mode = sif_mode; |
| 263 | cam->nmodes = ARRAY_SIZE(sif_mode); |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 264 | sd->brightness = PAC207_BRIGHTNESS_DEFAULT; |
| 265 | sd->exposure = PAC207_EXPOSURE_DEFAULT; |
| 266 | sd->gain = PAC207_GAIN_DEFAULT; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | /* this function is called at open time */ |
| 272 | static int sd_open(struct gspca_dev *gspca_dev) |
| 273 | { |
| 274 | struct sd *sd = (struct sd *) gspca_dev; |
| 275 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 276 | sd->autogain = 1; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | /* -- start the camera -- */ |
| 281 | static void sd_start(struct gspca_dev *gspca_dev) |
| 282 | { |
| 283 | struct sd *sd = (struct sd *) gspca_dev; |
| 284 | __u8 mode; |
| 285 | |
| 286 | pac207_write_reg(gspca_dev, 0x0f, 0x10); /* Power control (Bit 6-0) */ |
| 287 | pac207_write_regs(gspca_dev, 0x0002, pac207_sensor_init[0], 8); |
| 288 | pac207_write_regs(gspca_dev, 0x000a, pac207_sensor_init[1], 8); |
| 289 | pac207_write_regs(gspca_dev, 0x0012, pac207_sensor_init[2], 8); |
| 290 | pac207_write_regs(gspca_dev, 0x0040, pac207_sensor_init[3], 8); |
| 291 | pac207_write_regs(gspca_dev, 0x0042, pac207_sensor_init[4], 8); |
| 292 | pac207_write_regs(gspca_dev, 0x0048, PacReg72, 4); |
| 293 | |
| 294 | /* Compression Balance */ |
| 295 | if (gspca_dev->width == 176) |
| 296 | pac207_write_reg(gspca_dev, 0x4a, 0xff); |
| 297 | else |
| 298 | pac207_write_reg(gspca_dev, 0x4a, 0x88); |
| 299 | pac207_write_reg(gspca_dev, 0x4b, 0x00); /* Sram test value */ |
| 300 | pac207_write_reg(gspca_dev, 0x08, sd->brightness); |
| 301 | |
| 302 | /* PGA global gain (Bit 4-0) */ |
| 303 | pac207_write_reg(gspca_dev, 0x0e, sd->gain); |
| 304 | pac207_write_reg(gspca_dev, 0x02, sd->exposure); /* PXCK = 12MHz /n */ |
| 305 | |
| 306 | mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 307 | if (gspca_dev->width == 176) { /* 176x144 */ |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 308 | mode |= 0x01; |
| 309 | PDEBUG(D_STREAM, "pac207_start mode 176x144"); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 310 | } else { /* 352x288 */ |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 311 | PDEBUG(D_STREAM, "pac207_start mode 352x288"); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 312 | } |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 313 | pac207_write_reg(gspca_dev, 0x41, mode); |
| 314 | |
| 315 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ |
| 316 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ |
Jean-Francois Moine | 6a7eba2 | 2008-06-30 15:50:11 -0300 | [diff] [blame] | 317 | msleep(10); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 318 | pac207_write_reg(gspca_dev, 0x40, 0x01); /* Start ISO pipe */ |
| 319 | |
| 320 | sd->sof_read = 0; |
| 321 | sd->autogain_ignore_frames = 0; |
| 322 | atomic_set(&sd->avg_lum, -1); |
| 323 | } |
| 324 | |
| 325 | static void sd_stopN(struct gspca_dev *gspca_dev) |
| 326 | { |
| 327 | pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */ |
| 328 | pac207_write_reg(gspca_dev, 0x41, 0x00); /* Turn of LED */ |
| 329 | pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */ |
| 330 | } |
| 331 | |
| 332 | static void sd_stop0(struct gspca_dev *gspca_dev) |
| 333 | { |
| 334 | } |
| 335 | |
| 336 | /* this function is called at close time */ |
| 337 | static void sd_close(struct gspca_dev *gspca_dev) |
| 338 | { |
| 339 | } |
| 340 | |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 341 | static int sd_get_buff_size_op(struct gspca_dev *gspca_dev, int mode) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 342 | { |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 343 | switch (gspca_dev->cam.cam_mode[mode].width) { |
| 344 | case 176: /* 176x144 */ |
| 345 | /* uncompressed, add 2 bytes / line for line header */ |
| 346 | return (176 + 2) * 144; |
| 347 | case 352: /* 352x288 */ |
| 348 | /* compressed */ |
| 349 | return 352 * 288 / 2; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 350 | } |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 351 | return -EIO; /* should never happen */ |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | /* auto gain and exposure algorithm based on the knee algorithm described here: |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 355 | * <http://ytse.tricolour.net/docs/LowLightOptimization.html> */ |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 356 | static void pac207_do_auto_gain(struct gspca_dev *gspca_dev) |
| 357 | { |
| 358 | struct sd *sd = (struct sd *) gspca_dev; |
| 359 | int i, steps, desired_avg_lum; |
| 360 | int orig_gain = sd->gain; |
| 361 | int orig_exposure = sd->exposure; |
| 362 | int avg_lum = atomic_read(&sd->avg_lum); |
| 363 | |
| 364 | if (!sd->autogain || avg_lum == -1) |
| 365 | return; |
| 366 | |
| 367 | if (sd->autogain_ignore_frames > 0) { |
| 368 | sd->autogain_ignore_frames--; |
| 369 | return; |
| 370 | } |
| 371 | |
| 372 | /* correct desired lumination for the configured brightness */ |
| 373 | desired_avg_lum = 100 + sd->brightness / 2; |
| 374 | |
| 375 | /* If we are of a multiple of deadzone, do multiple step to reach the |
| 376 | desired lumination fast (with the risc of a slight overshoot) */ |
| 377 | steps = abs(desired_avg_lum - avg_lum) / PAC207_AUTOGAIN_DEADZONE; |
| 378 | |
| 379 | for (i = 0; i < steps; i++) { |
| 380 | if (avg_lum > desired_avg_lum) { |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 381 | if (sd->gain > PAC207_GAIN_KNEE) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 382 | sd->gain--; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 383 | else if (sd->exposure > PAC207_EXPOSURE_KNEE) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 384 | sd->exposure--; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 385 | else if (sd->gain > PAC207_GAIN_DEFAULT) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 386 | sd->gain--; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 387 | else if (sd->exposure > PAC207_EXPOSURE_MIN) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 388 | sd->exposure--; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 389 | else if (sd->gain > PAC207_GAIN_MIN) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 390 | sd->gain--; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 391 | else |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 392 | break; |
| 393 | } else { |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 394 | if (sd->gain < PAC207_GAIN_DEFAULT) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 395 | sd->gain++; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 396 | else if (sd->exposure < PAC207_EXPOSURE_KNEE) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 397 | sd->exposure++; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 398 | else if (sd->gain < PAC207_GAIN_KNEE) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 399 | sd->gain++; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 400 | else if (sd->exposure < PAC207_EXPOSURE_MAX) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 401 | sd->exposure++; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 402 | else if (sd->gain < PAC207_GAIN_MAX) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 403 | sd->gain++; |
Jean-Francois Moine | 956e42d | 2008-07-01 10:03:42 -0300 | [diff] [blame] | 404 | else |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 405 | break; |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | if (sd->exposure != orig_exposure || sd->gain != orig_gain) { |
| 410 | if (sd->exposure != orig_exposure) |
| 411 | pac207_write_reg(gspca_dev, 0x0002, sd->exposure); |
| 412 | if (sd->gain != orig_gain) |
| 413 | pac207_write_reg(gspca_dev, 0x000e, sd->gain); |
| 414 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* load reg to sen */ |
| 415 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ |
| 416 | sd->autogain_ignore_frames = PAC207_AUTOGAIN_IGNORE_FRAMES; |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | static unsigned char *pac207_find_sof(struct gspca_dev *gspca_dev, |
Jean-Francois Moine | 50a871f | 2008-06-30 19:47:33 -0300 | [diff] [blame] | 421 | unsigned char *m, int len) |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 422 | { |
| 423 | struct sd *sd = (struct sd *) gspca_dev; |
| 424 | int i; |
| 425 | |
| 426 | /* Search for the SOF marker (fixed part) in the header */ |
| 427 | for (i = 0; i < len; i++) { |
| 428 | if (m[i] == pac207_sof_marker[sd->sof_read]) { |
| 429 | sd->sof_read++; |
| 430 | if (sd->sof_read == sizeof(pac207_sof_marker)) { |
| 431 | PDEBUG(D_STREAM, |
| 432 | "SOF found, bytes to analyze: %u." |
| 433 | " Frame starts at byte #%u", |
| 434 | len, i + 1); |
| 435 | sd->sof_read = 0; |
| 436 | return m + i + 1; |
| 437 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 438 | } else { |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 439 | sd->sof_read = 0; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 440 | } |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | return NULL; |
| 444 | } |
| 445 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 446 | static void sd_pkt_scan(struct gspca_dev *gspca_dev, |
| 447 | struct gspca_frame *frame, |
Jean-Francois Moine | a5ae206 | 2008-07-04 11:16:16 -0300 | [diff] [blame] | 448 | __u8 *data, |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 449 | int len) |
| 450 | { |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 451 | struct sd *sd = (struct sd *) gspca_dev; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 452 | unsigned char *sof; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 453 | |
| 454 | sof = pac207_find_sof(gspca_dev, data, len); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 455 | if (sof) { |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 456 | int n; |
| 457 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 458 | /* finish decoding current frame */ |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 459 | n = sof - data; |
| 460 | if (n > sizeof pac207_sof_marker) |
| 461 | n -= sizeof pac207_sof_marker; |
| 462 | else |
| 463 | n = 0; |
| 464 | frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, |
| 465 | data, n); |
| 466 | sd->header_read = 0; |
Jean-Francois Moine | 6a7eba2 | 2008-06-30 15:50:11 -0300 | [diff] [blame] | 467 | gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 468 | len -= sof - data; |
| 469 | data = sof; |
| 470 | } |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 471 | if (sd->header_read < 11) { |
| 472 | int needed; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 473 | |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 474 | /* get average lumination from frame header (byte 5) */ |
| 475 | if (sd->header_read < 5) { |
| 476 | needed = 5 - sd->header_read; |
| 477 | if (len >= needed) |
| 478 | atomic_set(&sd->avg_lum, data[needed - 1]); |
| 479 | } |
| 480 | /* skip the rest of the header */ |
| 481 | needed = 11 - sd->header_read; |
| 482 | if (len <= needed) { |
| 483 | sd->header_read += len; |
| 484 | return; |
| 485 | } |
| 486 | data += needed; |
| 487 | len -= needed; |
| 488 | sd->header_read = 11; |
| 489 | } |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 490 | |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 491 | gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 492 | } |
| 493 | |
| 494 | static void setbrightness(struct gspca_dev *gspca_dev) |
| 495 | { |
| 496 | struct sd *sd = (struct sd *) gspca_dev; |
| 497 | |
| 498 | pac207_write_reg(gspca_dev, 0x08, sd->brightness); |
| 499 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ |
| 500 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ |
| 501 | } |
| 502 | |
| 503 | static void setexposure(struct gspca_dev *gspca_dev) |
| 504 | { |
| 505 | struct sd *sd = (struct sd *) gspca_dev; |
| 506 | |
| 507 | pac207_write_reg(gspca_dev, 0x02, sd->exposure); |
| 508 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ |
| 509 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ |
| 510 | } |
| 511 | |
| 512 | static void setgain(struct gspca_dev *gspca_dev) |
| 513 | { |
| 514 | struct sd *sd = (struct sd *) gspca_dev; |
| 515 | |
| 516 | pac207_write_reg(gspca_dev, 0x0e, sd->gain); |
| 517 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ |
| 518 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ |
| 519 | } |
| 520 | |
| 521 | static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val) |
| 522 | { |
| 523 | struct sd *sd = (struct sd *) gspca_dev; |
| 524 | |
| 525 | sd->brightness = val; |
| 526 | if (gspca_dev->streaming) |
| 527 | setbrightness(gspca_dev); |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val) |
| 532 | { |
| 533 | struct sd *sd = (struct sd *) gspca_dev; |
| 534 | |
| 535 | *val = sd->brightness; |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val) |
| 540 | { |
| 541 | struct sd *sd = (struct sd *) gspca_dev; |
| 542 | |
| 543 | /* don't allow mucking with exposure when using autogain */ |
| 544 | if (sd->autogain) |
| 545 | return -EINVAL; |
| 546 | |
| 547 | sd->exposure = val; |
| 548 | if (gspca_dev->streaming) |
| 549 | setexposure(gspca_dev); |
| 550 | return 0; |
| 551 | } |
| 552 | |
| 553 | static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val) |
| 554 | { |
| 555 | struct sd *sd = (struct sd *) gspca_dev; |
| 556 | |
| 557 | *val = sd->exposure; |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val) |
| 562 | { |
| 563 | struct sd *sd = (struct sd *) gspca_dev; |
| 564 | |
| 565 | /* don't allow mucking with gain when using autogain */ |
| 566 | if (sd->autogain) |
| 567 | return -EINVAL; |
| 568 | |
| 569 | sd->gain = val; |
| 570 | if (gspca_dev->streaming) |
| 571 | setgain(gspca_dev); |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val) |
| 576 | { |
| 577 | struct sd *sd = (struct sd *) gspca_dev; |
| 578 | |
| 579 | *val = sd->gain; |
| 580 | return 0; |
| 581 | } |
| 582 | |
| 583 | static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val) |
| 584 | { |
| 585 | struct sd *sd = (struct sd *) gspca_dev; |
| 586 | |
| 587 | sd->autogain = val; |
| 588 | /* when switching to autogain set defaults to make sure |
| 589 | we are on a valid point of the autogain gain / |
| 590 | exposure knee graph, and give this change time to |
| 591 | take effect before doing autogain. */ |
| 592 | if (sd->autogain) { |
| 593 | sd->exposure = PAC207_EXPOSURE_DEFAULT; |
| 594 | sd->gain = PAC207_GAIN_DEFAULT; |
| 595 | if (gspca_dev->streaming) { |
| 596 | sd->autogain_ignore_frames = |
| 597 | PAC207_AUTOGAIN_IGNORE_FRAMES; |
| 598 | setexposure(gspca_dev); |
| 599 | setgain(gspca_dev); |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val) |
| 607 | { |
| 608 | struct sd *sd = (struct sd *) gspca_dev; |
| 609 | |
| 610 | *val = sd->autogain; |
| 611 | return 0; |
| 612 | } |
| 613 | |
| 614 | /* sub-driver description */ |
Jean-Francois Moine | a5ae206 | 2008-07-04 11:16:16 -0300 | [diff] [blame] | 615 | static const struct sd_desc sd_desc = { |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 616 | .name = MODULE_NAME, |
| 617 | .ctrls = sd_ctrls, |
| 618 | .nctrls = ARRAY_SIZE(sd_ctrls), |
| 619 | .config = sd_config, |
| 620 | .open = sd_open, |
| 621 | .start = sd_start, |
| 622 | .stopN = sd_stopN, |
| 623 | .stop0 = sd_stop0, |
| 624 | .close = sd_close, |
| 625 | .dq_callback = pac207_do_auto_gain, |
| 626 | .pkt_scan = sd_pkt_scan, |
Hans de Goede | ab8f12c | 2008-07-04 18:29:32 -0300 | [diff] [blame^] | 627 | .get_buff_size = sd_get_buff_size_op, |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 628 | }; |
| 629 | |
| 630 | /* -- module initialisation -- */ |
| 631 | #define DVNM(name) .driver_info = (kernel_ulong_t) name |
Jean-Francois Moine | a5ae206 | 2008-07-04 11:16:16 -0300 | [diff] [blame] | 632 | static const __devinitdata struct usb_device_id device_table[] = { |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 633 | {USB_DEVICE(0x041e, 0x4028), DVNM("Creative Webcam Vista Plus")}, |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 634 | {USB_DEVICE(0x093a, 0x2460), DVNM("Q-Tec Webcam 100")}, |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 635 | {USB_DEVICE(0x093a, 0x2463), DVNM("Philips spc200nc pac207")}, |
| 636 | {USB_DEVICE(0x093a, 0x2464), DVNM("Labtec Webcam 1200")}, |
| 637 | {USB_DEVICE(0x093a, 0x2468), DVNM("PAC207")}, |
| 638 | {USB_DEVICE(0x093a, 0x2470), DVNM("Genius GF112")}, |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 639 | {USB_DEVICE(0x093a, 0x2471), DVNM("Genius VideoCam GE111")}, |
| 640 | {USB_DEVICE(0x093a, 0x2472), DVNM("Genius VideoCam GE110")}, |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 641 | {USB_DEVICE(0x2001, 0xf115), DVNM("D-Link DSB-C120")}, |
| 642 | {} |
| 643 | }; |
| 644 | MODULE_DEVICE_TABLE(usb, device_table); |
| 645 | |
| 646 | /* -- device connect -- */ |
| 647 | static int sd_probe(struct usb_interface *intf, |
| 648 | const struct usb_device_id *id) |
| 649 | { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame] | 650 | return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), |
| 651 | THIS_MODULE); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | static struct usb_driver sd_driver = { |
| 655 | .name = MODULE_NAME, |
| 656 | .id_table = device_table, |
| 657 | .probe = sd_probe, |
| 658 | .disconnect = gspca_disconnect, |
| 659 | }; |
| 660 | |
| 661 | /* -- module insert / remove -- */ |
| 662 | static int __init sd_mod_init(void) |
| 663 | { |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 664 | if (usb_register(&sd_driver) < 0) |
| 665 | return -1; |
| 666 | PDEBUG(D_PROBE, "v%s registered", version); |
| 667 | return 0; |
| 668 | } |
| 669 | static void __exit sd_mod_exit(void) |
| 670 | { |
| 671 | usb_deregister(&sd_driver); |
| 672 | PDEBUG(D_PROBE, "deregistered"); |
| 673 | } |
| 674 | |
| 675 | module_init(sd_mod_init); |
| 676 | module_exit(sd_mod_exit); |